Ribadesella is a small 84-square-kilometre (32 sq mi) municipality in the Autonomous Community of the Principality of Asturias, Spain. Known for its location on the Cantabrian Sea, at the outlet of the River Sella, Ribadesella is a town that forms part of the Picos de Europa. It is bordered on the east by Llanes, on the south by Cangas de Onís and Parres, and on the west by Caravia. Ribadesella is the home town of Queen Letizia of Spain.

The Cave of Altamira and Paleolithic Cave Art of Northern Spain is a grouping of 18 caves of northern Spain, which together represent the apogee of Upper Paleolithic cave art in Europe between 35,000 and 11,000 years ago. In 2008, they were collectively designated a World Heritage Site by UNESCO.